Agatha Christie, author of Murder on the Orient Express and other mystery novels, became the world’s best-selling fiction writer. She also provided the world with a nonfiction mystery: One winter’s night she disappeared without telling anyone—including her 7-year-old daughter—of her plans or whereabouts. Days later, people took notice of an outgoing, intellectual woman calling herself “Mrs. Theresa Neale” who had checked into a hotel about 250 miles from Christie’s home. Mrs. Neale turned out to be Christie. Some suggest that the author suffered from a dissociative fugue in which she forgot her own identity, took up a new one, and began traveling. She later regained her identity and said she’d experienced a “nervous breakdown” (Elliot, 2009).